"He thinks in 17 months he's going to accomplish what Markey hasn't done in 37 years?" she said.
But David Wanders, 43, of Stoughton, said he voted for Gomez because he felt Markey had been in Washington too long.
"He's a lifer," said Wanders, an independent who voted for Obama in the last election. "I don't think he lives here. He lives in Washington."
Markey spent more than $8.6 million on the race through the end of the last reporting period June 5, compared with $2.3 million by Gomez, according to Federal Election Commission records.
Outside groups also poured about $6 million into the Markey-Gomez contest, in the absence of an agreement between the candidates akin to one that had kept most outside money out of last year's Warren-Brown race.
Also on Tuesday's ballot was Richard Heos, affiliated with the Twelve Visions Party.
Associated Press writer Steve Peoples contributed to this report.